How does the potassium alum used in Green People deodorants differ from aluminium salts? image
  • Clean beauty

How does the potassium alum used in Green People deodorants differ from aluminium salts?

There are two main differences between Potassium Alum (Aluminium potassium sulfate dodecahydrate) and the salts Aluminium Chloride and Aluminium Chlorohydrate which are commonly used in antiperspirants.

By Charlotte Vøhtz

1 Minute read

 Molecular size is the main difference between Potassium alum (Aluminium potassium sulfate dodecahydrate) and the salts Aluminium chloride and Aluminium chlorohydrate which are commonly used in antiperspirants.

Potassium Alum vs Aluminium chloride / chlorohydrate

Aluminium chloride and Aluminium chlorohydrate have a small molecular size and work as antiperspirants by entering sweat ducts and reacting with amino acids and peptides to form a gel. This gel then plugs the sweat duct and prevents sweating. 

The aluminium in Potassium alum that we use is bonded into a much larger molecule – one that is physically too large to be absorbed through the skin.

Instead of forming a gel, thereby preventing perspiration, Potassium Alum sits on the surface of the skin where it prevents the bacteria responsible for causing sweaty odours from multiplying.

Potassium Alum deodorants by Green People

Safe and gentle on your skin, Green People's natural and organic deodorants keep you feeling fresh without the use of pore-clogging aluminium salts.

See all natural deodorants now

Read next...

gluten free skin care
Clean beauty

Essential guide to gluten-free skin care

Switching to gluten-free skin care products can feel overwhelming, especially when gluten hides under so many different ingredient names. At Green People UK, all of our products are intentionally gluten-free. We use natural, skin-loving alternatives like Quinoa to keep your skin and hair healthy, happy and irritation-free.

By Lucy Thorpe

09/10/2025

9 Minute read

READ NOW
vegan beauty gift ideas 2020
Eco & ethical

Top vegan Christmas beauty gift ideas

Shopping for a vegan beauty gift set for Christmas? For ethical, vegan gift inspiration, look no further than our vegan skin care Christmas gift guide, featuring thoughtful, cruelty-free Christmas gifts approved by the Vegan Society.  

By Lucy Thorpe

09/10/2025

7 Minute read

READ NOW
natural make-up for tweens and teenagers
Make-up

Natural mineral make-up for teens & tweens

Looking for a thoughtful first make-up gift for your teen or tween? Discover how gentle, natural mineral make-up - paired with caring organic skin care - helps young skin stay clear, calm, and confident.

By Alexandra Julian

06/10/2025

5 Minute read

READ NOW
Read more articles

1,500+ Five star reviews

Read all Reviews
"One of the best companies I have ever dealt with in my 63 years on this planet!"

Jan B.

Verified Buyer

"Have fallen in love with this product range. They are lovely to use and they work!"

Carole G.

Verified Buyer

"You guys are amazing, continue to love the brand, excited to order from you again!"

Maitreya L.

Verified Buyer

"Super quick delivery, ethical packaging and beautiful products."

Nat J.

Verified Buyer

"I love every product I have tried from Green People, and the customer service has always been excellent."

Maria H.

Verified Buyer

"So glad I have found an ethical supplier with great products!"

Susan B.

Verified Buyer